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(11)

EP 4 511 538 A1

(12)

(43) Date of publication: 26.02.2025 Bulletin 2025/09 (21) Application number: 23735561.5 (22) Date of filing: 02.06.2023

(51) International Patent Classification (IPC):  D21H 17/05(2006.01) D21H 19/20(2006.01) D21H 17/37(2006.01) D21H 21/16(2006.01) (52) Cooperative Patent Classification (CPC): D21H 21/16; D21H 19/20; D21H 17/37; D21H 27/10; D21H 19/22 (86) International application number: PCT/US2023/067808 (87) International publication number: WO 2023/240016 (14.12.2023 Gazette 2023/50)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 09.06.2022 US 202263350568 P (71) Applicant: Dow Global Technologies LLC Midland, MI 48674 (US)	(72) Inventors: YING, Hanze Midland, Michigan 48674 (US) MALOTKY, David L. Midland, Michigan 48674 (US) DRUMRIGHT, Ray E. Midland, Michigan 48674 (US) MASON, Jonathan F. Midland, Michigan 48674 (US) QI, Luqing Midland, Michigan 48674 (US) KAINZ, Bernhard U. 77836 Rheinmuenster (DE) (74) Representative: Beck Greener LLP  Fulwood House 12 Fulwood Place London WC1V 6HR London WC1V 6HR (GB)